以下为新GRE考试词汇复习资料，词汇解析后还附相关例句，考生可参考复习。
impugn: 表示怀疑; to criticize or challenge as false or questionable in nature
1) to attack with words; to question the truthfulness or integrity
2) to challenge as false, to assail
impugn <> uphold 指责，攻击，反对<>支持
impugn <> consent
impugn <> extol 9
impugn <> vindicate 责难<>辩护
impugn <> champion攻击，指责<>拥护，支持
impugn <> endorse 攻击，指责<>认可
impugn <> approve, laud, compliment
impugn <> appease
impugn <> grantant
impugn = charge yMdu
impugn 责难, 非难, 驳斥 <> champion/vindicate/endorse
impugn (criticize) <> uphold (support) should be correct rather than appease (soothe).
inviolable<>impugn 不可侵犯的,不可征服的<>指责
The defense lawyer impugned the witness's testimony, which set back the prosecution's case.
If I believe the man is a fraud I will impugn his comments.
【考法1】v. 责难，攻击抨击： to attack as false or questionable; challenge in argument
【例】impugn a political opponent's character 就政治对手的人品发难
【近】 attack, assail, contradict, contravene, cross, disaffirm, deny, gainsay, negate, negative, traverse onm
【反】 advocate, back, support, uphold 支持;authenticate 证实，证明
以上是小编为大家整理的GRE考试词汇的相关备考资料，希望考生们加强在词汇方面的记忆。取得满意的复习效果。